All Questions
18
questions
0
votes
1
answer
2k
views
Is it safe to use an "18v ~ 20v" power brick/adapter for a device that originally had an 18v adapter?
We have a device that uses an 18v adapter/power brick, unfortunately the adapter broke. As a replacement, we are considering an adapter that has a "18v ~ 20v" rating printed on its back. ...
- 101
-1
votes
1
answer
2k
views
USB-C charging cable for Nintendo Switch
I am trying to change a broken USB-c charger connector for a nintendo switch by changing the male end connector. The charger cable has 5 wires 2 red(Vbus) 2 Black (GND) and a small white cable that ...
- 7
-1
votes
1
answer
151
views
What is happening when I apply 5V DC to the DC end of a 12V AC to DC adapter? [closed]
The question is in itself a little bit confusing but I will try my best.
So I have a normal 12 volt (1 amp) AC to DC wall charger, nothing fancy about it. I use that to power a fan, which works great ...
- 135
0
votes
0
answers
47
views
How turbocharger mobile charger works?
I have found a turbocharger from a motorola device which has 5V, 9V and 12V outputs.
I want to use this charger to run raspberry pi 4.
I need to know how tutbocharger changes the voltage?
I am scared ...
- 223
2
votes
7
answers
19k
views
Why is a laptop power supply output voltage different from its battery?
I hope you will not mind answering. This question has long been on my mind.
Normally, the adapter output voltage is higher than that of the battery. In my laptop's case, the output voltage of the ...
- 291
2
votes
0
answers
806
views
Magsafe to USB-C adapter
I would like to create an Magsafe 1 to USB C adapter to re-use my macbook magsafe charger on my usb-c macbook.
I have these components below and already tried to connect both V+ and Ground with no ...
- 121
0
votes
7
answers
8k
views
Calculate the electric bill of a phone charger (AC adapter input or output?)
I need to calculate the amount of money I pay for charging my phone with this charger
I know that I need to calculate the watts then kWh, so I multiplied 5 V by 1.55 A to get 7.75 watts and then use ...
- 5
-7
votes
1
answer
270
views
can i plug 2.5A cord to 120W 6.32 19V AC adapter [closed]
I bought An asus charger for my laptop 120W 6.32 19V AC adapter, it cam with out AC plug, i got a plug from a regular charger with 2.5A ~250V.
will this affect the power going to the AC adapter since ...
- 101
0
votes
2
answers
1k
views
does a broken or blown ac adapter conduct electricity? [closed]
I had this question in my mind for many days.
The main question came to my mind from times ago when I was working on some electronic devices and at that time I had an ac adapter that it had some keys ...
0
votes
1
answer
2k
views
Using a laptop charger with the wrong polarity? [closed]
I just bought a replacement charger for my Fujitsu Lifebook AH532, but it seems like it has the wrong polarity. The backside of the laptop has a label saying it should be like this: https://imgur.com/...
0
votes
2
answers
36k
views
connecting a hp laptop charger adapter three wire output to a two wire cable [closed]
My laptop charger adapter broke and I a have this other old adaptor in the house. They both have the same voltage(19V) and 1.58A. The first adapter(The one that broke) has three wires (black, white, ...
-1
votes
2
answers
4k
views
What are the dimensions of US outlet holes? [closed]
I am specifically referring to the standard NEMA 5-15 three hole outlet that is used in North America. What are the dimensions of the holes in the outlets?
Surprisingly, I am having difficulty in ...
- 17
2
votes
1
answer
2k
views
Question on 3DS power adapters, minor voltage difference [duplicate]
I am going to be traveling overseas and bringing my Nintendo 3DS which the adapter outputs DC 4.6V 900mA.
I found an unofficial USB cable to charge it and I was curious if the minor variance in the ...
- 123
0
votes
1
answer
6k
views
Transmitting 12v DC over a long wire
I'm trying to charge my laptop through a 12V battery and 12-19V adapter over a long wire but I've noticed that the adapter makes some noise and doesn't work.
On the other hand when I connect it close ...
- 151
-1
votes
1
answer
266
views
Adding AC adapter to solar powered device
I have a solar-powered LED number display whose rechargeable batteries have apparently died. I'd like to hook it up to AC power using a 3V adapter (i.e., cutting the leads from the batteries and ...
- 1